PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-05-19T16:04:12

Updated: 2024-08-04T11:21:14.519Z

Reserved: 2020-03-27T00:00:00

Link: CVE-2020-10995

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-05-19T17:15:10.163

Modified: 2023-11-07T03:14:26.900

Link: CVE-2020-10995

cve-icon Redhat

No data.